Join Date: Oct 2009
Location: Nohfelden, Germany
There are a lot of factory systems that have this problem (the popping/rattling). The basic issue with stock speakers is that, in new vics, the can handle more RMS (continuous power) than older vics, BUT they have a lot shallower cone travel.
In other words, your speakers are handleing the power with no problem, but the cones are "bottoming out." That's why there's not a lot of distortion, but the "pop/bump."